'Dollond's achromatic telescope of two and three quarter inch aperture and 4 feet focus, with polar axis, on a mahogany stand, 2 astronomical and 1 terrestrial eyepiece and a divided object glass micrometer.' The instrument in the University's…
Universal equatorial instrument. 18th century instrument for positional measurement of stars with telescope mounted on an equatorial mount having finely graduated scales. Brass with 18" circles. Originally made by Sisson. Afterwards divided anew,…